ff1a1   08:36:49  W 3'44"  N 1'49"   594
f1a1    08:38:35  W 3'44"  N 1'49"   570
f1a2    08:41:35  W 3'44"  N 1'49"   579
f1a3    08:44:35  W 3'44"  N 1'49"   557
        08:44:35  W 3'44"  N 1'49"   557